DE102014017537B4 - A connection structure for connecting a filter housing to a filter housing retention structure, a cleaning system, and a method of connecting a filter housing cover to a filter housing retention structure - Google Patents

Abstract

A connection structure for connecting a filter housing (1) to a filter housing retention structure (300) adapted to supply a liquid to be cleaned to the filter housing (1) and to discharge the cleaned liquid, the connection structure comprising: - a filter housing cover (15) provided with the filter housing (1), which is adapted to receive a filter medium, is connectable, comprising: - at least two filter housing cover connection elements (17) which are connectable to corresponding filter housing holding structure connection elements (19) in the filter housing holding structure (300) to a Providing fluid communication between the filter housing retention structure (300) and the filter housing (1); - at least two filter housing cover guide members (29) provided on opposite sides of the filter housing cover (15); and guide members disposed on the filter case holding structure (300) and configured such that the filter case lid guide members (29) engage the guide housing members during connection of the filter case lid terminal members (17) with the filter case holding structure terminal members (19) are to guide the filter housing cover (15) during the connecting operation, to support and displaceably in a linear connecting direction (V), wherein the at least two filter housing cover guide members (29) from the two opposite sides of the filter housing cover (15) in a Direction substantially perpendicular to a connecting direction (A) of the filter housing cover connecting elements (17), the connecting direction (A) substantially corresponding to the connecting direction (V), at least one latching element for latching the filter housing cover (15) in a connected position, in the the filters housing cover terminal members (17) are fully connected to the filter housing retaining structure terminal members (19), disposed on the filter housing retaining structure (300) and / or on the filter housing cover (15) and / or the filter housing (1); and wherein the detent member comprises a resilient detent clip (116) and / or a snap closure (200).

Description

The present application relates to a connection structure for connecting a filter housing to a filter housing retention structure, a cleaning system comprising such a connection structure and a filter housing retention structure, a filter housing cover for a filter housing, and a method of connecting a filter housing cover to a filter housing retention structure.

The supply of laboratory equipment (e.g., autoclaves, dishwashers, water baths, etc.) usually requires pure water. This should be as free as possible of ions, organic constituents, particles and other possible impurities so as not to affect the functionality of the laboratory equipment or subsequently cause contamination.

The preparation of buffers and cell culture media also requires water. In order not to adversely affect the growth of the cell cultures, the water used must have a high degree of purity.

To provide pure water or ultrapure water for the applications described above, water treatment systems are commonly used which remove the corresponding contaminants from the water.

In this system, water is passed through a filter housing containing a filtering medium, such as activated carbon and / or resin, which filters out the undesirable contaminants from the water.

The filter housing is for this purpose coupled to a housing of the water treatment system to be fed through the housing of the water treatment device containing the water to be purified or connected to a corresponding water supply line. The purified water then flows back into the collection container for the purified water within the water treatment device.

However, the coupling of the filter housing to the housing of the water treatment device is problematic in the prior art.

DE 602 08 437 T2 discloses a separation module that fits into a stationary receptacle that has a support that functions as a pivot line and a slot that receives and locks a latch of the separation module. The separation module has a curved surface that fits the pivot line of the stationary receptacle and a latch that, in cooperation with the slot of the stationary receptacle, locks the separation module in the stationary receptacle. The separation module includes a filter positioned within a housing of the separation module and fittings that connect a source of fluid to be cleaned with a point of use for the fluid being cleaned in the separation module.

From the European patent EP 1 542 782 B1 For example, a support structure for a filter housing is known. The support structure has two mutually facing support arms. At the mutually facing sides of the support arms, a respective cutout is provided, which extends in a connecting direction of the filter housing with the support structure. The cutouts taper towards the supporting structure. On a lower surface of the cutout is a catch that protrudes into the cutout. The filter housing has a cover, the lateral surfaces are each inserted into the cutouts. For this purpose, the lateral surfaces of the lid are first moved in a tilted position along the upper surface of the cutouts to the support structure. Once the user senses a resistance that should correspond to the connected position, the user must tilt the lid or filter housing downwardly so that a cutout in the respective lateral face of the lid locks with the detent in the cutout of the support arms.

However, this known from the prior art construction has the disadvantage that the lateral surfaces of the lid must first be fitted exactly in the region between the locking lugs and the oblique upper surface of the two cutouts in the support arms. This requires that the lid or filter housing be held in the exact tilted position, otherwise the detent would block in the cutouts sliding to the connected position.

Further relevant prior art is the document WO 2014/210 365 A1 refer to.

Accordingly, the object of the present invention is to provide a connection structure for connecting a filter housing to a filter housing retention structure, which enables easy and reliable connection.

• - einen Filtergehäusedeckel, der mit dem Filtergehäuse, welches dazu ausgelegt ist, ein Filtermedium aufzunehmen, verbindbar ist, umfassend:
• - mindestens zwei Filtergehäusedeckel-Anschlusselemente, die mit entsprechenden Filtergehäusehaltestruktur-Anschlusselementen in der Filtergehäusehaltestruktur verbindbar sind, um einen Flüssigkeitsaustausch zwischen der Filtergehäusehaltestruktur und dem Filtergehäuse bereitzustellen;
• - mindestens zwei Filtergehäusedeckel-Führungsglieder, die an im Wesentlichen entgegengesetzten Seiten des Filtergehäusedeckels bereitgestellt sind; und
• - Führungsglieder, die an der Filtergehäusehaltestruktur angeordnet sind und derart ausgebildet sind, dass die Filtergehäusedeckel-Führungsglieder während des Verbindungsvorgangs der Filtergehäusedeckel-Anschlusselemente mit den Filtergehäusehaltestruktur-Anschlusselementen mit den Führungsgliedern in Eingriff gebracht sind, um den Filtergehäusedeckel während des Verbindungsvorgangs zu stützen, zu führen und in einer linearen Verbindungsrichtung verschiebbar zu lagern;

wobei die mindestens zwei Filtergehäusedeckel-Führungsglieder von den zwei entgegengesetzten Seiten des Filtergehäusedeckels in eine Richtung im Wesentlichen senkrecht zu einer Anschlussrichtung der Filtergehäusedeckel-Anschlusselemente hervorragen;
wobei die Anschlussrichtung im Wesentlichen der Verbindungsrichtung entspricht;
wobei zumindest ein Rastglied zum Verrasten des Filtergehäusedeckels in einer verbundenen Position, in der die Filtergehäusedeckel-Anschlusselemente mit den Filtergehäusehaltestruktur-Anschlusselementen vollständig verbunden sind, an der Filtergehäusehaltestruktur und/oder an dem Filtergehäusedeckel und/oder dem Filtergehäuse angeordnet ist; und
wobei das Rastglied eine rückstellfähige Rastklammer oder einen Schnappverschluss aufweist.This object is achieved in accordance with one aspect of the present application by a connection structure for connecting a filter housing to a filter housing retention structure, which is designed to supply a liquid to be purified to the filter housing and to remove the purified liquid, the connection structure comprising:

• - a filter housing cover connectable to the filter housing adapted to receive a filter medium, comprising:
• at least two filter housing cover connection elements connectable to corresponding filter housing retention structure connection elements in the filter housing retention structure to provide fluid communication between the filter housing retention structure and the filter housing;
• at least two filter housing cover guide members provided on substantially opposite sides of the filter housing cover; and
• Guide members disposed on the filter case holding structure and configured such that the filter case lid guide members are engaged with the filter case holding structure connecting members with the guide members during the connecting operation of the filter case lid connecting members to support the filter case lid during the connecting operation and slidably mount in a linear connection direction;

wherein the at least two filter housing cover guide members protrude from the two opposite sides of the filter housing cover in a direction substantially perpendicular to a connecting direction of the filter housing cover connection members;
wherein the connecting direction substantially corresponds to the connecting direction;
wherein at least one latching member for latching the filter housing cover in a connected position, in which the filter housing cover connection elements are completely connected to the filter housing housing structure connection elements is arranged on the filter housing housing structure and / or on the filter housing cover and / or the filter housing; and
wherein the locking member comprises a resilient locking clip or a snap closure.

The term "linear" here also includes a substantially linear connection direction. By "substantially" is meant a slight deviation by, for example, a widening.

The term "connectable" includes both reversible connections between the filter housing retaining structure connecting elements and the connecting elements of the filter housing cover as well as non-reversible, firm connections between the filter housing cover and the filter housing. However, the connection between the filter housing cover and the filter housing can also be configured as a non-reversible connection.

The guide members allow the filter housing cover, on which the filter housing cover connection elements are located, to be guided by a rectilinear movement towards the filter housing support structure connection elements. The filter housing cover is supported and held in a predetermined position during the entire connecting operation, so that the filter housing cover connecting members can be reliably connected to the filter housing holding structure connecting members. In other words, the filter housing cover connection elements of the filter housing cover are guided in a targeted manner to the filter housing holder structure connection elements. In particular, tilting can be completely avoided so that the user can connect the filter housing cover to the filter housing retention structure with one hand.

The at least two filter case lid guide members project from the two opposite sides of the filter case lid in a direction substantially perpendicular to a connecting direction of the filter case lid connecting members.

The filter housing cover guide members can thus be reliably positioned in the guide members and guided to the filter housing holding structure. A lateral tilting or tilting is thus prevented. The filter housing cover connection elements formed on the filter housing cover can consequently be displaced exactly to the filter housing housing structure connection elements, so that a reliable connection can be established.

At least one latching member for latching the filter housing cover in a connected position in which the filter housing cover connection elements are completely connected to the filter housing holder structure connection elements is arranged on the filter housing holder structure and / or on the filter housing cover and / or on the filter housing.

The locking member offers the advantage on the one hand that the user notices an increased resistance just before the connected position, which conveys to the user that the filter housing cover has arrived almost in the connected position. By deliberately overcoming the increased resistance, the corresponding element locks with the locking member, whereby the filter housing cover is held in the connected position. Accidental removal of the filter housing cover can thus be avoided so that the connection between the filter housing cover Can be reliably held connection elements and the filter housing holding structure connection elements.

The latching member may comprise a resilient latching clip into which preferably engages a pin in the connected position which projects perpendicularly to the direction of connection of the filter housing cover.

Alternatively or additionally, the locking member has a snap closure.

The connection direction essentially corresponds to the connection direction.

Once the filter housing cover is in engagement with the guide members, the filter housing cover connection elements, which are aligned in a connecting direction, aligned in the connecting direction. When the filter housing cover is moved in the connecting direction to the filter housing holding structure connecting members, which are also preferably aligned in the connecting direction, the filter housing cover connecting members can be linearly connected to the filter housing holding structure connecting members, so that a reliable connection can be established. Any tilting movements to make a connection are avoided.

More preferably, the guide members on guide rails, which are opposite to each other and formed linearly according to the connection direction.

Alternatively or additionally, the latching member may include filter housing lid latching lugs and guide member latching recesses, the guide members each including at least one guide member latching recess into each of which a filter housing cover latching lug disposed on the filter housing cover in a connected position in which the filter housing covers Terminal elements are completely connected to the filter housing holding structure connecting elements, are latched.

Preferably, the filter housing cover guide members are resiliently mounted and / or include actuating surfaces extending in a connecting direction of the filter housing cover connecting members and projecting from the filter housing cover in a direction opposite to the filter housing cover terminal members.

This makes it possible that the latch between the filter housing holding structure and the filter housing cover can be solved by compressing the actuating surfaces. In addition, the latching can be assisted by the user pressing apart the actuating surfaces in the connected position to ensure that the filter housing lid latching lugs are reliably latched to the guide member latching recesses.

Furthermore, it is preferred that the actuating surfaces are formed such that they widen or taper in the connecting direction and / or connecting direction.

By an expanding or tapering shape of the actuating surfaces, the user can grip the actuating surfaces safely. In particular, by the tapered shape of the actuating surfaces can continue to ensure that even people with smaller hands can operate the actuating surfaces with one hand.

Further, it is preferable that the filter case lid latches project in a direction perpendicular to the connecting direction of the filter case guide members.

This makes it possible, inter alia, that the filter housing cover locking lugs are clearly visible from the outside when the filter housing cover latches have entered the guide member locking recesses. For this purpose, the guide member locking recesses are preferably formed as through holes in the guide members.

According to another aspect of the present application, the underlying problem is solved by a cleaning system comprising a connection structure according to any one of the above described embodiments according to the above aspect and a filter case holding structure to which the filter case cover is connectable.

Preferably, the filter housing retaining structure has filter housing retaining structure connecting elements, which are aligned in the connecting direction and with which the filter housing cover connection elements of the filter housing cover are connectable.

More preferably, the filter housing holding structure connection elements or the filter housing cover connection elements each have at least one latching hook, which engages in a recess in the corresponding connection element, with which it can be connected, in the connected position.

Moreover, it is preferable that the filter housing cover is connected to the filter housing, and the resilient detent clip is adapted to receive the filter housing in the connected state.

• - Bereitstellen eines Reinigungssystems gemäß einer der oben beschriebenen Ausführungsformen des weiteren Aspekts der vorliegenden Anmeldung;
• - Einsetzen der Filtergehäusedeckel-Führungsglieder in die Führungsglieder derart, dass die Filtergehäusedeckel-Führungsglieder in den Führungsgliedern gestützt werden;
• - lineares Verschieben des Filtergehäusedeckels in der Verbindungsrichtung bis die Filtergehäusedeckel-Anschlusselemente des Filtergehäusedeckels mit den Filtergehäusehaltestruktur-Anschlusselementen der Filtergehäusehaltestruktur verbunden sind.

According to another aspect of the present application, the underlying problem is solved by a method of connecting a filter housing cover to a filter housing retention structure, the method comprising:

• Providing a cleaning system according to one of the above described embodiments of the further aspect of the present application;
• - Inserting the filter housing cover guide members in the guide members such that the filter housing cover guide members are supported in the guide members;
• linearly moving the filter housing cover in the connection direction until the filter housing cover connection elements of the filter housing cover are connected to the filter housing housing structure connection elements of the filter housing housing structure.

Preferably, the method further comprises the step of latching the filter housing cover or the filter housing with the filter housing holding structure by means of at least one latching member.

• 1 zeigt einen Führungsrahmen mittels dem ein Filtergehäuse mit einer Filtergehäusehaltestruktur verbind bar ist;
• 2 zeigt eine Querschnittsansicht eines Anschlusssteckers und einer Anschlussbuchse;
• 3 zeigt eine Rastklammer als Mittel zum Verrasten eines Filtergehäuses in einer verbundenen Position;
• 4 zeigt Rasthaken als Mittel zum Verrasten eines Filtergehäuses in der verbundenen Position;
• 5 zeigt einen Schnappverschluss als Mittel zum Verrasten eines Filtergehäuses in der verbundenen Position;
• 6a) - c)zeigen einen Filtergehäusedeckel mit Filtergehäusedeckel-Rastnasen, die im verbundenen Zustand in Führungsglied-Rastaussparungen in den Führungsgliedern einrasten, und mit sich aufweitenden Betätigungsflächen;
• 7a) - b) zeigen den Filtergehäusedeckel der 6 in einem verbundenen Zustand und einem Zustand bevor der Filtergehäusedeckel in die Führungsglieder eingesetzt ist;
• 8 zeigt eine Ausführungsform ähnlich zu der Ausführungsform aus den 6 und 7, jedoch mit sich verengenden Betätigungsflächen; und
• 9 zeigt ein Filtergehäuse gemäß der Ausführungsform in 8 bevor der Filtergehäusedeckel in die Führungsglieder eingesetzt ist.

These and other objects, features and advantages of the present invention will become more apparent from a study of the following detailed description of preferred embodiments and the accompanying drawings. It will be appreciated that while embodiments are described separately, individual features thereof may be combined to form additional embodiments.

• 1 shows a guide frame by means of a filter housing with a filter housing holding structure is connected bar;
• 2 shows a cross-sectional view of a connector and a connector socket;
• 3 shows a locking clip as means for locking a filter housing in a connected position;
• 4 shows latching hooks as a means for latching a filter housing in the connected position;
• 5 shows a snap closure as a means for locking a filter housing in the connected position;
• 6a) - c) show a filter housing cover with filter housing cover latches that engage in the connected state in guide member locking recesses in the guide members, and with widening actuating surfaces;
• 7a) - b) show the filter housing cover the 6 in a connected state and a state before the filter housing cover is inserted in the guide members;
• 8th shows an embodiment similar to the embodiment of the 6 and 7 , but with narrowing actuating surfaces; and
• 9 shows a filter housing according to the embodiment in 8th before the filter housing cover is inserted into the guide members.

1 shows a filter housing 1 containing a tubular base body 3 includes. A base body interior of the base body 3 is adapted to receive one or more different filter media (not shown), such as activated carbon and / or resins, for cleaning a fluid, such as water. For this purpose, the filter media can be filled directly into the base body interior or can be inserted into the base body interior by means of filter cartridges containing the filter media.

To close the base body interior to the outside, includes the filter housing 1 further at or near a first free end 9 a filter housing bottom 11 and at or near a second free end 13 a filter housing cover 15 , The filter housing bottom 11 and / or the filter housing cover 15 can work together with the base body 3 molded from one piece or non-detachably connected to one another from several parts. However, in order to enable a replacement of the filter cartridge or the filter medium, it is preferred that the filter housing bottom 11 and / or the filter housing cover 15 separately from the base body 3 trained and thus releasably connected to each other. The filter housing bottom 11 and the filter housing cover 15 For example, with the base body 3 be screwed or locked together.

The filter housing cover 15 has at least two connectors 17 as preferred filter housing cover connection elements, each with a corresponding connection socket (in 1 not shown) as a preferred filter housing retaining structure connection elements of a filter housing retention structure 300 are connectable to fluid communication between the filter housing retention structure 300 and the filter housing 1 manufacture. In other words, via a connection between the connectors 17 and the connection sockets a fluid to be cleaned from the filter housing holding structure 300 by means of preferably a pump (not shown) to the filter medium in the filter housing 1 be guided. Furthermore, the purified fluid (eg, pure water or ultrapure water) may return to the filter housing retention structure 300 be returned to the collection container for the purified fluid. For example, a fluid connection between a first connector 17 and a first port used to supply a fluid to be cleaned to the filter media in the filter housing 1 while carrying a fluid connection between a second connector 17 and a second connector for returning the purified fluid to dedicated receptacles.

Although the provision of connector plugs 17 in this application, only in relation to the filter housing cover 15 can also be described, the filter housing bottom 11 Have connector. In particular, the filter housing cover 15 and the filter housing bottom 11 be formed identical.

Furthermore, though 1 a filter housing cover 15 with connection plugs 17 shows, alternatively, sockets on the filter housing cover 15 be formed while the connector 17 at the filter housing holding structure 300 are arranged.

Furthermore, the connectors are 17 parallel to each other and to the same side of the filter housing cover 15 aligned. As in 1 shown, the connectors protrude 17 from the filter housing cover 15 in front. The connection plugs 17 Can be integral with the filter housing cover 15 be formed or at least partially formed as separate components. In the latter case, the connector 17 with the filter housing cover 15 preferably be connected by means of a locking, screw or adhesive connection.

2 shows a cross-sectional view of a connector plug 17 and a connection socket 19 ,

The orientation of the connector 17 or the connection socket 19 is called connecting direction A designated. To the connector 17 with the connection socket 19 To be able to connect is the connection direction A of the connector 17 and the connection socket 19 identical. In particular, the connection direction corresponds A the axis of rotation of the connector 17 or the connection socket 19 ,

To make a fluid-tight connection between the connector 17 and the connection socket 19 to manufacture, the connector indicates 17 on an outer side 21 at least one circumferential notch 23 on, in which (each) a sealing element 25 is used. In a connected state of the connector 17 with the connection socket 19 enters the sealing element 25 in contact with an inner side 27 the connection socket 19 , so that a fluid-tight connection between the connecting elements is made.

Alternatively, at least one notch in the inner side surface of the connection socket 19 be formed, in which the sealing element 25 is arranged.

The sealing element 25 may be a circular seal ring, a quad ring, a C-ring or an L-ring, or be sprayed in the 2-component plastic system.

To the filter housing 1 with the filter medium with the filter housing holding structure 300 to connect and hold there, has the filter housing retention structure 300 Leaders on. These guide members may preferably be in a guide frame 100 be formed on the filter housing holding structure 300 arranged as in 1 is shown. In particular, the guide members are adapted to the filter housing 1 to support during the connection process and to a connected position in which the filter housing 1 with the filter housing holding structure 300 connected to lead.

The guide members and / or the guide frame 100 can / can with a housing 302 the filter housing retention structure 300 be designed as a structural unit or on the filter housing holding structure 300 be attached. In the latter case is / are the guide members or the guide frame 100 preferably by means of an adhesive connection with the filter housing holding structure 300 connected or bolted to this.

1 shows a separately formed guide frame 100 which is due to the filter housing retention structure 300 is arranged.

The guide frame 100 has at least two guide frame sides 102 which are aligned substantially parallel to each other and the filter housing holding structure 300 protrude. Preferably, the guide frame sides protrude 102 from a vertical side surface of the housing 302 the filter housing retention structure 300 at a preferably right angle to the corresponding vertical side surface, that of a connecting direction V equivalent. The distance between the at least two guide frame sides 102 is designed such that the filter housing 1 at least partially between the guide frame sides 102 can be arranged.

The at least two guide frame sides 102 can directly with the filter housing holding structure 300 be connected. Alternatively, the at least two guide frame sides 102 by means of a Guide frame holding plate 104 be connected. The guide frame retaining plate 104 preferably connects the respective first free ends 106 the at least two guide frame sides 102 , First free end 106 This is the end of the guide frame pages 102 considered that to the filter housing holding structure 300 is adjacent.

The guide frame retaining plate 104 connects the guide frame pages 102 and preferably simultaneously serves to guide the frame 100 at the filter housing holding structure 300 to fix.

In the guide frame holding plate 104 is at least one connection element recess 108 formed by the connecting sockets (in 1 not shown) at least partially protrude. Indicates the guide frame retaining plate 104 more than one terminal recess 108 preferably protrudes in each case a connection socket 19 through them.

On or in side surfaces 110 the guide frame pages 102 , which are opposite to each other, a guide member is formed in each case. As in 1 shown, these guide members are preferably as a guide rail 112 formed. Preferably, the guide rails extend 112 along the entire length of the guide frame sides 102 from a second free end 114 to the respective first free end 106 , The second free end 114 a guide frame page 102 is the first free end 106 arranged opposite.

The guide rail 112 is at the second free end 114 open, so that a later-described filter housing cover guide member 29 on the filter housing cover 15 in the guide rail 112 can be used over the open end.

The end of the guide rail 112 at the first free end 106 the lead frame page 102 is through a side surface of the filter housing holding structure 300 or, as in 1 shown by the guide frame retaining plate 104 closed.

The guide rails 112 are formed substantially linearly to a linear displacement of the filter housing cover 15 and hence the filter housing 1 to enable.

In particular, the guide rails 112 formed parallel to each other, so that a uniform, linear displacement of the filter housing cover 15 in the guide rails 112 can be done. Any tilting is thereby avoided.

However, it is conceivable that the guide rails 112 at or adjacent to the first free end 106 the lead frame page 102 are widened.

The orientation of the guide rails 112 corresponds to the connection direction V in which the filter housing cover 15 to the filter housing holding structure 300 is displaceable.

It should be noted that any description of the guide members or the guide rails 12 even without a guide frame 100 are valid. The formation of the guide members or the guide rails 12 in a leadership frame 100 is to be understood only as a preferred embodiment.

The filter housing cover 15 has at substantially opposite sides in each case a filter housing cover guide member 29 preferably from the filter housing cover 15 protrude. The shape of the filter housing cover guide member 29 is designed such that it is in a guide rail 112 can engage and is supported in this displaceable. Preferably, the filter housing cover guide members protrude 29 from the filter housing cover 15 in a direction perpendicular to the direction of connection A in front. The filter housing cover guide members 29 can be used as a structural unit with the filter housing cover 15 be formed or reversibly connected to this.

In other words, the guide frame 100 or the guide rails 112 configured such that it is possible, a filter housing cover 15 at least partially between two guide frame sides 102 or guide rails 112 arranged by the arranged on opposite sides of the filter housing cover guide members 29 each in a corresponding guide rail 112 intervention. The filter housing cover guide members 29 are about the second free end 114 the guide frame pages 102 in the guide rails 112 can be used and used in the guide rail 112 be moved in a linear direction to the connected position. As a result, the filter housing cover becomes 15 supported by two sides during the connection process, causing a tilting or tilting of the filter housing cover 15 can be avoided. Because the guide rail 112 has a linear shape, the filter housing cover 15 be moved to the connected position in a simple linear form. Furthermore, by the guide rails 112 the weight of the filter housing 1 be worn.

Preferably, the connection direction corresponds A the connector 17 once the filter housing cover guide links 29 in the guide rails 112 engage the connection direction V so that the connector 17 in a substantially linear direction of movement to the connection sockets 19 can be performed.

Around the filter housing cover 15 or the filter housing 1 in the connected position and to avoid accidental disconnection, the filter housing cover 15 a bolt 31 have, which engages with a locking member in the connected position. As in 1 shown, the bolt protrudes 31 preferably perpendicular to the direction of connection A and / or connection direction V from the filter housing cover 15 ,

The locking member may be attached to the filter housing retaining structure 300 and / or the guide frame 100 be arranged.

As in 3 shown, the locking member as a resilient locking clip 116 be educated. The locking clip 116 is in the connection direction V and / or the connection direction A opened to one side, leaving the bolt 31 from the locking clip 116 (see locking clip in 3 above) in the connected position. Alternatively, the locking clip 116 (see locking clip in 3 below) be formed so that they the base body 3 of the filter housing 1 can record in the connected position.

Be the filter housing cover guide members 29 in the guide rails 112 in the connection direction V to the filter housing holding structure 300 shifted, come at the end of the connection process of the bolt 31 and / or the base body 3 in the corresponding locking clip 116 on. For this purpose, the user must apply a corresponding force, which is required to resiliently aufzubiegen the locking clip, so that the bolt 31 or the base body 3 in the locking clip 116 can penetrate. As soon as the bolt 31 or the base body 3 in the locking clip 116 is arranged, moves the locking clip 116 preferably back to its original position, so that the bolt 31 or the base body 3 in the locking clip 116 is held. An unwanted separation of the filter housing 1 from the filter housing holding structure 300 can thus be avoided. In addition, the user feels in the connection process, the resistance of the locking clip 116 so that the user reliably learns when the connected position has been reached, namely, once the resistance has been overcome. In other words, an inertial connection is provided.

The locking clips described above 116 may be used alternatively or in combination.

Alternatively or additionally, the locking member as at least one latching hook 118 be trained as in 4 shown. The at least one latching hook 118 protrudes from a free end of the connection socket 19 in the connection direction V and / or the connection direction A before, in the connected state in a recess 33 in the connector 17 to intervene or to lock with this.

At a connection socket 19 can 1, 2, 3, 4, 5, 6 or more locking hooks 118 be provided. The depression 33 in the connector 17 into which the latching hooks 118 a connection socket 19 Snap, can as a circumferential recess 33 be formed or from several individual wells 33 exist, in each case at least one latching hook 118 can engage.

Although the locking hook 118 in 4 at the connection sockets 19 are arranged, the locking hooks can alternatively on the connection plugs 17 be provided. The connection sockets 19 have in this case the necessary recess for locking 33 on.

Alternatively or additionally, a snap closure 200 for locking the filter housing cover 15 serve in the connected position.

5 shows a preferred embodiment of a snap closure 200 ,

The in 5 shown snap closure 200 has a closing hook 202 and a preferably spring-biased snapper 204 on, which are locked together in the connected state.

As in 5 shown, the closing hook 202 on the filter housing cover 15 be arranged and in the connecting direction A and / or connection direction V from the filter housing cover 15 protrude.

The snapper 204 however, at the filter housing retention structure 300 or the guide frame 100 , preferably on the guide frame holding plate 104 , by means of a snap holder plate 206 be arranged. The snapper 204 is about a snapper axis of rotation SR rotatably mounted to be rotatable between an open and a closed position.

In the open position of the snapper 204 can the filter housing cover 15 moved to the connected position or the filter housing cover 15 be removed from the connected position. Once the filter housing cover 15 has arrived in the connected position, the snapper rotates 204 around the snapper rotation axis SR to use the locking hook 202 to engage and lock with this.

Only by actively unlocking the snap closure 200 by the user, the connection can be solved, so that a reliable connection between the connection elements is ensured.

Although in 5 the closing hook 202 on the filter housing cover 15 is arranged and the snapper 204 on the guide frame 100 is attached, it is also possible that the locking hook on the guide frame 100 and the snapper 204 on the filter housing cover 15 are arranged.

Furthermore, the corresponding snap-action component can also be used instead of on the guide frame 100 at the filter housing holding structure 300 be arranged by yourself.

As a further not shown alternatives of locking a magnetic closure, and a quick connector are conceivable.

In 6 a further alternative of a locking member is shown, which is used to the filter housing 1 or the filter housing cover 15 in the connected position, in which the connection elements are completely connected to each other, to hold by means of a latching connection.

In the present case, the locking member filter housing latches 35 on the filter housing cover 15 and guide member locking recesses 120 in the leadership members.

As in 6b) showing a sectional view taken along the section line A - A in 6a) corresponds, the filter housing cover points 15 Filter cover-guide members 29 on, on opposite sides of the filter housing cover 15 in a direction preferably perpendicular to the direction of connection A and / or connection direction V are arranged. Furthermore, it is preferred that the filter housing cover guide members 29 essentially located on one level.

The filter housing cover guide members 29 have elongate filter housing cover guide elements 37 on, preferably in the connecting direction V and / or connection direction A extend. In particular, the filter housing cover guide elements 37 formed at least partially conforming to the shape of the guide members to in the guide members in the connection process of the filter housing 1 with the filter housing holding structure 300 to be able to at least partially enter and be led into this.

The filter housing cover guide elements 37 are each by at least one spacer from the filter housing cover 15 spaced. The spacer is designed such that the filter housing cover guide elements 37 on the filter housing cover 15 as well as around the filter housing cover guide elements 37 resettable to store. The spacer can this purpose from a spacer bar 39 be educated. As in 6b) can be shown, preferably two spacer webs 39 be arranged to a filter housing cover guide element 37 on the filter housing cover 15 to arrange. To provide a resilient, movement of the filter housing cover guide element 37 to allow, are the spacer webs 39 in the direction of connection A and / or connection direction V spaced apart. Furthermore, the length and the thickness of the spacer webs 39 then designed how strong the filter housing cover guide elements 37 can be deflected and how smoothly this movement is executable.

The spacer bars 39 preferably project in a direction perpendicular to the direction of connection A and / or connection direction V from the filter housing cover 15 in front. The length of the spacer bars 39 defines the distance of the filter housing cover guide elements 37 from the filter housing cover 15 ,

The spacer bars 39 are with the filter housing cover guide elements 37 at or near the first end 41 the filter housing cover guide elements 39 connected. As first end 41 the Filtergehäusedeckel Führungselmente 39 Here, the end is considered closer to the connectors 17 of the filter housing 1 is arranged. As "close" to the first end 41 a distance of about 5mm to 30mm, preferably about 10mm to 25mm, and preferably about 15mm to 20mm is considered.

On one side of the filter housing cover guide elements 37 that the filter housing cover 15 is turned away, each is preferably a filter housing lid locking lug 35 arranged. The filter housing cover latch 35 preferably has a rising area 43 on, in the connecting direction A from one side closer to the connector plugs 17 is, preferably continuously increases. Alternatively, the rising area 43 increase discontinuously or stepwise or trapezoidally. A second surface of the filter housing lid latch 35 extends perpendicular to the filter housing cover guide element 37 and serves as a latching nose latching surface 45 ,

The guide members or, as in 6 shown the guide rails 112 each have at least one guide member locking recess 120 on. This can be designed as an opening, the the guide rail 112 penetrates or as a recess, wherein the recess in a side surface of the guide rail 112 must be formed, the filter housing cover 15 in the inserted state of the filter housing cover 15 is facing.

In the guide member locking recesses 120 are in the connected state, when the connection elements are fully connected, the filter housing cover latches 35 each latched.

The width of the filter housing cover 15 including the spacer bars 39 and the filter housing cover guide elements 37 preferably have such a width that the filter housing cover guide elements 37 in the guide rails 112 are usable and can be moved in these. The width of the filter housing cover 15 including the spacer bars 39 and the filter housing cover guide elements 37 plus the filter housing lid latches 35 However, it is wider than the width between the outer surfaces 122 the guide rails 112 , As outer surface 122 this is the area of the guide rails 112 viewed the filter housing cover 15 faces in the inserted state.

The filter housing lid latches 35 are preferably located at a position farther from the connector plugs 17 is spaced apart as the spacer webs 39 ,

Will the filter housing cover 15 or the filter housing cover guide elements 37 in the guide rails 112 used, so the filter housing cover 15 so long in the connection direction V be moved to the guide rail 112 with the filter housing cover latches 35 come in contact. This contact makes the filter housing cover guide element 37 resiliently deflected, leaving the filter housing cover guide elements 37 at least in the area behind the spacer bars 39 to the filter housing cover 15 be deflected. As "behind" the spacer bars 39 becomes the area of the filter housing cover guide elements 37 understood, in the connecting direction A the side of the connector 17 is opposite.

Will the filter housing cover 15 continue in the connection direction V shifted, the outer surface slides 122 the guide rail 112 on the rising surface 43 the filter housing lid latch 35 along. Reached the filter housing lid latch 35 the guide member locking recess 120 , the filter housing cover guide elements move 37 back to their original position, leaving the filter housing lid latches 35 each with a corresponding guide member locking recess 120 lock. In particular, the locking lug Verrastungsfläche 45 that with the guide rail 112 in contact prevents unintentional pulling out of the filter housing cover 15 ,

To solve the latching or to assist the latching process, the filter housing cover guide elements 37 each an actuating surface 47 respectively. For this purpose, the filter housing cover guide elements 37 in the direction of connection A in a direction opposite to the protrusion direction of the connector 17 extended. This extended section can act as an actuating surface 47 to serve to the user. Preferably, the actuating surface protrudes 47 in the connected state via the guide rails 112 out.

As in the 6b) and 6c) shown is the actuating surface 47 bent so that the distance between the filter housing cover guide elements 37 in the direction of connection A to the connection plugs 17 rejuvenated.

By compressing the filter housing cover guide elements 37 by the user, the filter housing cover guide elements 37 be deflected resilient. As a result, the locking can be solved. Squeezing the filter housing cover guide elements 37 by means of the actuating surfaces 47 apart, the locking can be supported.

Preferably, the actuating surfaces taper 47 in a curved shape. The curved shape can hereby be adapted to the natural shape of a human finger. At the free end of the actuating surfaces 47 can additionally an actuating surface thickening 49 be educated. This can ensure that the user's fingers safely on the actuating surfaces 47 can rest and slipping can be prevented.

In a preferred embodiment, the guide rails 112 with a filter housing cover 400 educated.

The filter housing cover 400 connects to one of the two guide rails 112 and can be used in addition to the guide rails 112 on the filter housing holding structure 300 to fix.

The filter housing cover 400 has a cover connection element for this purpose 402 on. On an upper side of the cover connecting element 402 are according to the number of connection elements cover hoods 404 educated. The cover hoods 404 are in connecting direction A and / or connection direction V towards the filter housing cover 15 open, so that the connector 17 in the cover hoods 404 can penetrate. The connection sockets 19 the filter housing holding structure 300 are from the cover hoods 404 covered. In the connected state of the connection elements cover the cover hoods 404 the connection elements.

7a) shows the filter housing cover 15 out 6 in the connected state of the connecting elements through the filter housing cover 400 be covered.

7b) shows the filter housing cover 400 and the filter housing cover 15 out 6 in the unconnected state.

The cover connector 402 may preferably conform to the shape of the filter housing cover 15 be formed, so that in the connected state, the surface of the filter housing cover 15 connected to the cover connector 402 comes into contact, are congruent.

8th shows an embodiment that is similar to the embodiment of 6 and 7 is and is essentially different in that the filter housing cover guide elements 37 in the direction of connection A from the connection plugs 17 rejuvenate away. This can ensure that the actuation of the actuating surfaces 47 can be operated for any hand sizes.

The filter housing cover guide elements 37 can be resilient on the filter housing cover 15 as in the embodiment of 6 and 7 be stored. Alternatively, as in 9 shown, the filter housing cover guide elements 37 rigid with the filter housing cover 15 be connected. Only the area of the filter housing cover guide elements 37 that rejuvenated is designed resilient. In the tapered area are the filter housing lid latches 35 and the actuating surfaces 47 arranged. The rigid area of the filter housing cover guide elements 37 is the area that is in a guide member or a guide rail 112 is feasible. This area is preferably congruent with the guide members or the guide rails 112 designed.

Although in the 6 to 9 is described that the actuating surfaces 47 are each formed identically, the shape of the actuating surfaces 47 differ in the individual forms.

It should be noted that combinations of the above-indicated locking members are also possible.

In each of the above-noted latches may also be included an electrical / electronic intelligence, which connects to the cartridge cover 15 recognizes. Here electrical NO / NC, relays or electronic sensors such as NFC ("near field communication) or RFID (" radio-frequency identification ") are possible. Furthermore, it is conceivable to detect by means of a barcode the location and type of the cleaning cartridge used

LIST OF REFERENCE NUMBERS

1

filter housing

3

base body

9

first free end of the base body

11

Filter housing bottom

13

second free end of the base body

15

Filter housing cover

17

connector

19

socket

21

outer side of the connector

23

score

25

sealing element

27

inner side of the connection socket

29

Filter cover guide member

31

bolt

33

deepening

35

Filter cover-locking lug

37

Filter housing cover guide member

39

spacer web

41

first end of the filter housing cover guide element

43

rising area of the filter housing lid latch

45

Locking lugs-latching area

47

actuating surface

49

Operating surfaces thickening

100

guide frame

102

Guide frames page

104

Guide frame holding plate

106

first free end of the guide frame side

108

Connection element recess

110

opposite side surfaces of the guide frame sides

112

guide rail

114

second free end of the guide frame side

116

locking clip

118

latch hook

120

Guide member-locking recess

122

Outer surface of the guide rail

200

snap lock

202

hasp

204

snapper

206

Snapper-holder plate

300

Filter housing support structure

302

Housing of the filter housing holding structure

400

Filter housing cover covering

402

Cover connecting element

404

cover hood

A

connection direction

SR

Snapper axis of rotation

V

connection direction

Claims (13)

A connection structure for connecting a filter housing (1) to a filter housing retention structure (300) adapted to supply a liquid to be cleaned to the filter housing (1) and to remove the purified liquid, the connection structure comprising: a filter housing cover (15) connectable to the filter housing (1) adapted to receive a filter medium, comprising: at least two filter housing cover connection elements (17) connectable to corresponding filter housing retention structure connection elements (19) in the filter housing retention structure (300) to provide fluid communication between the filter housing retention structure (300) and the filter housing (1); - at least two filter housing cover guide members (29) provided on opposite sides of the filter housing cover (15); and Guide members disposed on the filter case holding structure (300) and configured such that the filter case lid guide members (29) are engaged with the filter case holding structure terminal members (19) with the guide members during the connecting operation of the filter case lid terminal members (17) to guide, support and slidably support the filter housing cover (15) during the connection operation; wherein the at least two filter housing cover guide members project from the two opposite sides of the filter housing cover in a direction substantially perpendicular to a connecting direction of the filter housing cover connecting members; the connecting direction (A) substantially corresponding to the connecting direction (V); wherein at least one latching member for latching the filter housing cover (15) in a connected position, in which the filter housing cover connection elements (17) are completely connected to the filter housing holding structure connecting elements (19), on the filter housing holding structure (300) and / or on the filter housing cover ( 15) and / or the filter housing (1) is arranged; and wherein the locking member comprises a resilient locking clip (116) and / or a snap closure (200). Connection structure after Claim 1 wherein a pin (31) protrudes perpendicularly to the direction of connection (A) from the filter housing cover (15) adapted to engage the resilient detent clip (116) in the connected position. A connection structure according to any one of the preceding claims, wherein the guide members have guide rails (112) facing each other and formed linearly according to the connecting direction (V). Connecting structure according to one of the preceding claims, wherein the latching member comprises filter housing cover latching lugs (35) and guide member latching recesses (120), wherein the guide members each comprise at least one guide member latching recess (120) into each of which a filter housing cover latching lug (35), which is arranged on the filter housing cover (15), in a connected position, in which the filter housing cover connection elements (17) with the filter housing holding structure connection elements (19) are fully connected, are latched. Connection structure after Claim 4 wherein the filter housing cover guide members (29) are resiliently mounted and / or include actuating surfaces (47) extending in a connecting direction (A) of the filter housing cover connecting members (17) and from the filter housing cover (15) in a direction opposite to Projecting filter housing cover connection elements (17). Connection structure after Claim 5 , wherein the actuating surfaces (47) are formed such that they widen or taper in the connecting direction (A) and / or connecting direction (V). Connection structure according to one of Claims 4 to 6 wherein the filter case lid locking lugs (35) project in a direction perpendicular to the connecting direction (A) of the filter housing guide members (29). Cleaning system comprising a connection structure according to one of Claims 1 to 7 and a filter housing retaining structure (300) to which the filter housing cover (15) is connectable. Cleaning system after Claim 8 wherein the filter housing retaining structure (300) comprises filter housing retaining structure connecting elements (19) which are aligned in the connecting direction (V) and with which the filter housing cover connecting elements (17) of the filter housing cover (15) are connectable. Cleaning system after Claim 8 or 9 wherein the filter housing retaining structure connection elements (19) or the filter housing cover connection elements (17) each have at least one latching hook (118) which engages in a recess (33) in the corresponding connection element, with which it can be connected, in the connected position. Cleaning system according to one of Claims 8 to 10 wherein the filter housing cover (15) is connected to the filter housing (1), and wherein the resilient latching clip (116) is adapted to receive the filter housing (1) in the connected state. A method of connecting a filter housing cover (15) to a filter housing retention structure (300), the method comprising: - providing a cleaning system according to any one of Claims 8 to 11 ; - inserting the filter housing cover guide members (29) in the guide members such that the filter housing cover guide members (29) are supported in the guide members; - Linear displacement of the filter housing cover (15) in the connecting direction (V) until the filter housing cover connection elements (17) of the filter housing cover (15) with the filter housing holding structure connection elements (19) of the filter housing holding structure (300) are connected. Method according to Claim 12 , further comprising: - locking the filter housing cover (15) or the filter housing (1) with the filter housing holding structure (300) by means of at least one latching member.

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